Graduated from the Medical University of Kraków (now Collegium Medicum of the Jagiellonian University) in 1990. He obtained specialisation in paediatrics in 1995 (first degree) and in 2001 (second degree). Since 1990 he has been working at the Department of Paediatric Oncology and Haematology of the Polish-American Institute of Paediatrics, Collegium Medicum UJ. In 1994 he completed scientific internships at Albany Medical College and Dana Farber Cancer Institute in the USA . Since 1996 he has been running an individual specialist medical practice in the field of paediatrics.
He is a member of the editorial board of the journals Medycyna Praktyczna and Lekarz Rodzinny, the McMaster Textbook of Internal Medicine, and medical editor of the portal Medycyna Praktyczna dla Pacjentów. List of publications available in the Medline database at: http://www.ncbi.nlm.nih.gov/pubmed?term=strojny%20w